1953: Hillary's expedition used at least two types of boots, including a custom high-altitude model made by The British Boot, Shoe & Allied Trade Research Association of Kettering, England. They were lightweight for their day and had insulating material sandwiched inside a waterproof "envelope" to preserve insulation loft.
2012: Tough, breathable Cordura outers, heat-reflective aluminum, closed-cell foam insulation, and a waterproof zipper make Scarpa's Phantom 8000 boots (above) popular on high peaks. They are light, totally weatherproof, and have a custom fit. The double-boot system will allow O'Neill to remove the bulky outers after each day's ascent to chill out in camp wearing just the lightweight inner booties.
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